Here is the four-page brochure on the 1M-356 engine. The 1M-356 shared most reciprocating parts with the 356 automobile engine (1940-50). It could be had with direct drive with 1 to 1 ratio and reduction gear units of Packard design in ratios of 1.45 to 1, 2.04 to 1, 2:52 to 1 and 3:55 to 1, the last intended for use in work boat installations. It was offered with right and left hand rotation. Approximately 1,525 of these engines were sold between 1947 and 1951. The 1M-356 was equipped with an updraft Stromberg SFM-5 carburetor with a Zenith back-fire arrester and special sealed marine Autolite 6V electrical equipment, with 12V equipment offered as a $20.00 option. Sea water was circulated through the engine by a special marine bronze water pump made by Sherwood Brass Works. It was driven by a gear that was attached to the front of the big timing gear. The price of a 1M-356 engine with 2:04 reduction gear ratio was $1,130.00 f.o.b. Detroit.The pictures show a 1M-245 and a 1M-356 engine now on display at America's Packard Museum in Dayton, Ohio.

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